The composting of biological waste is an important step towards the establishment of closed cycles of matter. A constantly high quality of the compost is, however, of utmost importance for the deliberate re-introduction of compost into the environment. The quality of the compost produced is determined by a very complex biological process during which the organic wastes are converted with the aid ...

Underground railway systems, can generate heat from their operations to raise the temperatures of carriages and the station substantially. This may lead to passenger discomfort and complain especially in warm weather conditions that prevail in Tehran if underground environment is not cooled. Transportation air conditioning Committee of American ...

Low-Cost Wireless Data Loggers Protect Your Inventory As wireless monitoring and alarming is becoming even more widespread and affordable, many supply and cold chain companies are turning to WiFi-capable devices to monitor their inventories for temperature and humidity. Now CAS DataLoggers can help you save on costs and time ...

A HOT WET SUMMER Once again, we’ve entered the hurricane season, when hot humid air envelops most of North America. Beginning in the Spring and lasting until the first frost of Autumn, the air is typically well above 60% Relative Humidity, which is ideal for promoting the growth of mold. The official Hurricane season runs from June to September, and even though they may not qualify as ...

In order to determine the relative importance of a vegetative filter strip and a biofiltration swale in a treatment train for road runoff, US EPA Storm Water Management Model was used to model infiltration and runoff from the filter strip. The model consisted of a series of subcatchments representing the road, the filter strip and the side-slopes of the swale. Simulations were carried out for ...

Summary A laboratory study was made of the performance of a miniature-size, thin-film aluminum oxide humidily sensor over a range of ambient temperatures from 0°C to 40°C and encompassing humidities from 40 to 78,000 parts per million by volume (ppm-v). Hysteresis and temperature effects of the sensors were obtained from tests performed at ambient temperatures 40°C, 25°C and ...

A local representative for a national window manufacturer asked if we could investigate several instances where clients with new window installations were experiencing condensation on the interior of the window glass. Investigation: Each of the several homes with this condition was examined during cold weather when the moisture was actually present on the windows. Relative humidity levels ...

The effect of weather condition, packaging material and storage duration on some quality parameters of dried tomato slice was investigated. Dried tomato slice samples each weighing 20 g were packaged in small size pouches made from aluminium foil, polypropylene, high density polyethylene and waxed paper. The packaged samples were placed in airtight glass bottles at the relative humidity levels of ...

Increases in atmospheric temperature are a global phenomenon, but reports of regional climate changes are scarce. Since no long-term air temperature and humidity data were reported from the UAE we obtained routinely collected weather data from three airports in the Emirates. Over the period 1982-2009 in Abu Dhabi, Dubai, and Al Ain the mean annual temperature increased by up to +3°C. Increases ...

The main aim of this research was to estimate daily pan evaporation (EP) using adaptive neural-based fuzzy inference system (ANFIS) method in the semi-arid region of Iran. The daily climatic data of the five gauging stations which are located in Isfahan Province, including maximum and minimum temperature, maximum and minimum relative humidity, wind speed and ...

In tertiary education institutions, good indoor air quality (IAQ) provides a conducive environment for teaching and learning activities. A field study on the environmental conditions and occupants’ comfort was carried out in six laboratories at Universiti Sains Malaysia. The study evaluates the current thermal comfort conditions using objective measurement and subjective assessment. The measured ...

MTB inzenjering d.o.o. is a trade partner of our industrial measurement instruments in Zagreb, Croatia and our partner for ten years already. They are expanding their own laboratory (BMB laboratory) for calibration of relative humidity devices. For this, they recently needed a new, highly precise hand held device for reference measurements. They decided to rely on the XA1000 hand held device from ...

As a contribution to soil degradation and desertification monitoring in the northern Mediterranean basin, the present study investigates long–term climate variations in the traditional agro–forest system of Thriasio Plain (Greece) by examining month average temperature, precipitation, relative humidity, Standardised Precipitation Index (SPI) and de Martonne index time series between 1958 and ...

From routinely available observational data, the daytime ventilation conditions in Buenos Aires city have been studied. The climatological behaviour was analysed. The study included the effects of local conditions, such as the coastal location, the urban features and the influence of air humidity on the characteristic parameters of the dispersive capability of the atmosphere. The frequencies of ...

Environmental radioactivity due to radon and its progenies in the ambient air at the vertical 15 UD Pelletron accelerator facility of the Inter University Accelerator Centre, New Delhi, India was evaluated to calculate the annual effective dose to the workers and users. The radon activity was measured with an active monitor. The activity concentrations of the radon progenies were measured ...

We present a first order model of airflow within the wood stack of a timber dryer during the constant-rate drying period, allowing the exergy destruction and entropy generation rates to be determined for heat, mass and momentum transfer. The effects of varying timber stack and airflow variables on the entropy generation rate are determined. We find that heat transfer is the dominant contribution ...

The National Energy Technology Laboratory site in Morgantown, West Virginia, USA, maintains a 150-foot free standing meteorological tower with data collection points at ground level, 33 feet, 75 feet, and at 150 feet. The data collected at ground level is Air Temperature, relative humidity, total rainfall, and snow depth. The other stations monitor wind direction and speed. Additionally, air ...

This paper takes a look at the many factors known to have a direct or indirect impact on the quality of oil and the diverse range of different measurement devices have been developed for this purpose, such as relative humidity and absolute water content indicators, particle calculators, dielectric sensors, oxidisation indicators (TAN value), viscosity meters and colour analysers. It explains ...

Abstract The overall goal for this paper is to gain better understanding of the environmental aspect of the aluminium smelting cell. It encompasses a study of the relative contributions of operational practices, duct flow, alumina feeding and ambient conditions to the overall HF generation and the different categories of emission distribution between the recycle system, the pot room roof and the ...

The objective was to reduce variation in the outcome of a corona-electrostatic separation process for solid waste recycling by finding operating conditions (high-voltage level, roll speed, splitter position) under which uncontrollable variation in 'noise factors' (ambient humidity, metal content in the feed) has minimal impact on the quantity and the quality of the recovered products. The samples ...

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